A Treatise on Navigation, and Nautical Astronomy: Adapted to Practice, and to the Purposes of Elementary Instruction; Containing the Elementary Principles of Algebra, Geometry, Plane and Spherical Trigonometry, and Navigation ...
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A B C added altitude Answer apparent altitude base called Cape centre circle Coast column compass computed consequently contained correction corresponding Cosec Cosine Cotang course declination departure difference Difference of Latitude Dist distance divided drawn England equal equator EXAMPLES Extend figure given greater Greenwich half Hence horizontal hour Indian Island Isles join latitude less logarithm longitude mean measured meet meridian middle miles moon Nautical nearly noon object observed opposite Pacific Ocean parallax parallel passing perpendicular plane pole PROBLEM produced proportion quantity radius rectangle remainder right angles right ascension sail Secant ship sides sine squares star subtract Suvers Table taken Tang tangent Theo THEOREM triangle true Vers